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2-Elasticsearch基础入门-安装和请求语句

作者:互联网

一起来玩Elasticsearch,加我微信:wx1250134974

Elasticsearch认证复习准备

https://www.elastic.co/guide/cn/elasticsearch/guide/current/getting-started.html

 

 

  1. 安装配置Elasticsearch

https://www.elastic.co/guide/cn/elasticsearch/guide/current/running-elasticsearch.html

 

 

##下载软件包

https://www.elastic.co/cn/downloads/elasticsearch

 

 

##解压并运行,后台运行加-d选项即可

bin/elasticsearch (or bin\elasticsearch.bat on Windows)

 

 

##验证是否运行,类似于下方输出即表示安装成功

curl http://localhost:9200/

 

 

##下载安装kibana,注意对应的版本(下载后直接解压)

 

https://www.elastic.co/cn/downloads/past-releases/

 

##运行Kibana

bin/kibana &

 

##验证kibana是否安装成功,浏览器访问下方端口

http://IP:5601/

 

 

  1. 像风一样的体验下Elasticsearch

##Elasticsearch的客户端

如果是JAVA代码,用内置客户端,包括节点客户端(Node client)、传输客户端(Transport client)

如果非JAVA代码,使用RESTful风格的客户端,包括Python、PHP、Go等等

https://www.elastic.co/guide/en/elasticsearch/client/index.html

 

 

 

 

##Elasticsearch的语法

curl -X<VERB> '<PROTOCOL>://<HOST>:<PORT>/<PATH>?<QUERY_STRING>' -d '<BODY>'

 

 

 

 

 

 

##感受下Elasticsearch的请求语句

curl -XGET 'http://localhost:9200/_count?pretty' -d '

{

    "query": {

        "match_all": {}

    }

}'

 

 

 

 

##索引文档(直接放到Kibana的DevTool中感受下吧)

PUT /megacorp/employee/1

{

    "first_name" : "John",

    "last_name" :  "Smith",

    "age" :        25,

    "about" :      "I love to go rock climbing",

    "interests": [ "sports", "music" ]

}

注意,路径 /megacorp/employee/1 包含了三部分的信息:

megacorp-索引名称

employee-类型名称

1-特定雇员的ID

 

 

 

 

 

##检索文档

按照ID搜索

GET /megacorp/employee/1  

 

查询下last_name包含Smith的雇员

GET /megacorp/employee/_search

{

    "query" : {

        "match" : {

            "last_name" : "Smith"

        }

    }

}

 

查询下last_name包含smith同时年龄大于30的

GET /megacorp/employee/_search

{

    "query" : {

        "bool": {

            "must": {

                "match" : {

                    "last_name" : "smith"

                }

            },

            "filter": {

                "range" : {

                    "age" : { "gt" : 30 }

                }

            }

        }

    }

}

 

查询喜欢攀岩的雇员

GET /megacorp/employee/_search

{

    "query" : {

        "match" : {

            "about" : "rock climbing"

        }

    }

}

 

查询喜欢攀岩的雇员,这个查询更精准

GET /megacorp/employee/_search

{

    "query" : {

        "match_phrase" : {

            "about" : "rock climbing"

        }

    }

}

 

 

让搜索结果高亮

GET /megacorp/employee/_search

{

    "query" : {

        "match_phrase" : {

            "about" : "rock climbing"

        }

    },

    "highlight": {

        "fields" : {

            "about" : {}

        }

    }

}

 

 

查看员工的爱好都有哪些

GET /megacorp/employee/_search

{

  "aggs": {

    "all_interests": {

      "terms": { "field": "interests.keyword" }

    }

  }

}

 

 

 

查看下last_name为smith的,他们的爱好怎么分布的

GET /megacorp/employee/_search

{

  "query": {

    "match": {

      "last_name": "smith"

    }

  },

  "aggs": {

    "all_interests": {

      "terms": {

        "field": "interests.keyword"

      }

    }

  }

}

 

 

查看不同爱好的人,他们的平均年龄是多少

GET /megacorp/employee/_search

{

    "aggs" : {

        "all_interests" : {

            "terms" : { "field" : "interests.keyword" },

            "aggs" : {

                "avg_age" : {

                    "avg" : { "field" : "age" }

                }

            }

        }

    }

}

 

 

 

一起来玩Elasticsearch,加我微信:wx1250134974

 

标签:语句,入门,GET,##,megacorp,Elasticsearch,employee,name
来源: https://blog.csdn.net/donghaixiaolongwang/article/details/110292207